Method for forging brake-beam fulcrums



Jan. 24, 1928. 1,656,930

L. L. WHITNEY METHOD FOR FORGING BRAKE BEAM FULCRUMS Filed Jan. 9, 19242 Sheets-Sheet 1 Jan. 24, 1928. 1,656,930

L. 1.. WHITNEY METHOD FOR FORGING BRAKE BEAM FULCRUMS Filed Jan. 9, 19242 Sheets-Sheet 2 hoe/W W656.- [ore/2.5 my.

Patented .lan. 24, 1928.

UNITED STATES PATENT OFFICEQ LOREN L. WHITNEY, F HAMMOND, INDIANA,nssrenon r0 AMERICAN .sTEEL FOUNDRIES, or CHICAGO, ILLINOIS, ACORPORATION or NEWJERSEY.

METHOD FOR rename BRAKE-BEAM rnLcRUMS.

Application filed January 9, 1924. Serial No. 685,027.

.- lorgmg l'ulcrums whereby a stronger and better finished fulcrum maybe made at a reduced cost. Another ob ect 1s to provide a method offorging fulcrums adapted to meet the varifill i one requirements for thecommercial productions of fulcrums.

These and other objects are accomplished by means of the methoddisclosed on the accompanying sheets of drawings, in whicl Figure l is afragmentary side elevation of ablank from which. the fulcrum is to beforged Figure 2 is an end view thereof;

li igures 3, 4c and 5 are top, side and end views respectively, of oneend cit the blank after the latter has been upset to accumulate enoughstockat that end to form jaws;

Figures 7 and 8 are top, side and end views respectively, of the sameblank after that .end has been hot-sawed, split, punched. or spreadpreparatory to forming jaws;

Figures 9, 10 and. 11 are top, side and end views respectively, of thesame end of the blank after the blank has been subjected to pressure forgiving final shape and finish to said jaws;

Figure 12 is a side elevation of the opposite end of the blank;

Figure 1.3 is an end view thereof;

Figures 14-, 15 and 16 are top, side and end views respectively, of thesecond end of the blank after it has been upset;

Figures 17, 18 and 19 are top, side and end views respectively, of thesecond end. of the blank after the metal at that end has been upset anadditional amount and spread. preparatory to forming attaching ears;

Figures 20, 21 and 22 are top, side and end views respectively, of thesecond end of the blank after said blank has been hotsawed, split,punched or spread prepara tory to forming jaws;

Figures 23, 24. and 25 are top, side and end views respectively, of thesecond end of the blank after the jaws and attaching ears have beencompleted;

Figures 26 and 27 are top and side views, respectively, of the completedfulcrum;

Figure 28 is a top plan view of a flat bar beam to which t'ulcrums,formed bythe methodabove indicated, are secured;

Figure 29 is a sectional view of stationary and movable dies by means ofwhich one end of the fulcrum is formed; and

Figure 250 is a similar sectional view of stationary and movable dies bymeans of which the other end of the fulcrum is formed.

The various novel features of the invention will be apparent from thefollowing description and drawings, and will be particularly pointed outin the appended claims Referring to the figures Ofthe drawings, it willbe noted that a blank 30, in this instance of round stock, is providedhaving two end portions 31. and 32. The end. 31 is first heated and thenplaced in a die and up set to build up sufficient stock 33 preparatoryto:lorming jaws. A stationarydjie portion, as shown at 34 in the die block3501? Figure 29, is used. for such upsetting and also a movable die 36.The upset portion of the first end. 31 of the blank is then hotsawed,split, punched or spread to provide a longitudinally extending opening37, as shown in Figures 6, 7 and 8, to form jaw portions 38. The sameend of the blank is then placed in a stationary portion .39 ofthe dieblock 35 and subjectedto further pressure by the movable die it) to formthe com pleted jawslil, as shown in Figures 9,10 and 11..

The other or second end 32 of the blank is then heated and upset tobuild up stock at 4:2, asshown in liigures 141, 15 and 16. In thisinstance the second end of the blank is placed in the stationary die.portion 43 in a die block 44 and subjected to pressure by a movable diemember 45. The second end of thevblank is then placed in the stationarydie portion 46 in. the die block 44 and. subjected to further pressureby a movable die member 47 for the purpose of upsetting that end of theblank an additional amount and spreading the metal thereof laterally tobuild up suflicient stock to form not only jaws, but attaching ears,shown at 48 in Figures 17, 1.8 and 19. The upset portion of the secondend is then hot-sawed, split, punched or spread to provide alongitudinally extending opening 49, as shown in Figures 20, 21 and 22to form jaw portions 50. The second end of the blank is then IOU placedin the stationary die portion 51 and subjected to further pressure bythe movable die 52 to further spread the metal laterally at that end andcomplete the jaws 50 with their attaching ears 53, as shownparticularly'in Figures 23, 24 and 25. Registering openings 5st are thenformed in the jaws 4:1 for reception of the pivot pin, and pairs ofregistering openings 55 and 56 formed in the attaching ears 53 of jaws50 for the receptionofrivets by means of which the ears may beseeured toa beam. The completed fulcrum is shown in Figures 26 and 27, andfulcrums thus formed are shown applied to a flat bar beam 57 in Figure28.

As mentioned above, the openings 5-1- are for the reception of a pin bymeans of which brake levers 58 may be connected to the fulcrums. Pins orrivets 59 extend through the pairs of registering openings 55 and in thecars 53 and also pass through the beam 57 for attaching the fulcrum ineach instance to the flat beam in a manner to prevent relative pivotalmovement between the fulcrum and the beam. As shown in Figure 28, thefiat bar beam 56 has lever hangers 60 secured to the ends thereof.

It will be appreciated, of course, that the angular relationship betweenthe jaws at opposite ends of the fulcrum may be made to meet theparticular requirements.

By means of the simple, efficient and iin proved method he-reinabovedescribed, a brakebeam fulcrum may be forged which is stronger and has abetter finish and is produced at a cost lower than fulcrums heretoforemade.

It is my intention to cover all modifications 1 of the invention fallingwithin the spirit and scope of the following claims.

I claim:

1. A method of forging a fulcrum consisting in, providing a blank,heating same, upsetting one end thereof to accumulate sufficient metalto form jaws, forming a longitudinal opening in said upset end toprovide spaced jaw portions, treating said jaw portions to finish saidjaws, then upsetting the other end of the blank to accumulate metal,then subjecting said second end to pressure to further upsetand thenspread the metal. at

said end preparatory to forming attaching ears, then forming alongitudinal opening in said second upset end to provide spaced jaws,and then subjecting said end to further treatment to form completed jawsand attaching ears.

2. A method of forging a fulcrum consisting in providing a blank,upsetting the ends thereof to accumulate sutlicient metal to form jaws,upsetting one of said ends to accumulate more metal and spreading samepreparatory to forming attaching ears, treating the ends of said blankto form longitudinal openings for providing portions of pairs ofja\\'s,.and treating said jaw portions for linishing said jaws andattaching ears.

3. A method of forging a brake beam fulcrum, consisting in providing ablank, heating the ends thereof, upsetting said ends to accumulatesullicient metal to form jaws, treating one of said ends for spreadingthe metal preparalory to forming attaching ears, treating said upsetends to form longitudinal openings at an angle with respect to eachother to provide pairs of spaced jaws, and the-n subjecting said jawportions to further treatment for finishing said pairs of jaws andforming attaching ears in one pair of jaws.

l. A method of forging a brake beam l'ulcrum consisting in providing ablank, heating same, subject-ing one end to pressure for upsetting sameto accumulate metal to form jaws, subjecting said end to furtherpressure for spreading the metal preparatory to forming attaching ears,then forming a longitudinal opening in said end to provide spaced jawportions, and then treating said aw portions to finish said jaws andlorm attaching ears.

5. The method of manufacturing fulerums which consists in heating ablank and formink it with upset portions at either end, thensuccessively slittingand spacing said upset portions to form ears, andshaping and punching said ears to form supporting means.

Signed at Hammond, lndiana, this 7th day of December, 1923.

LOREN L. WHITNEY.

(ill

